.principal{
    width: 100%;
    padding:50px 0;
}
.principal-heart{
    width: 85%;
    margin: 0 auto;
    min-width:1200px;
    max-width: 1600px;
}
.pecu{
    display: grid;
    grid-template-columns: repeat(2,1fr);
    grid-template-rows: repeat(5,1fr);
    gap: 20px;
}
.pecu-li{
    background-color: #fff;
    padding: 20px 20px 10px;
    box-sizing: border-box;
    border-radius: 10px;
    transition: 0.2s;
}
.pecu-li:hover{
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}
.pecu-li:hover .pecu-li-top-img::after{
     opacity: 1;
     visibility: visible;
}

.pecu-li-top{
    display: flex;
    gap: 20px;
    margin-bottom: 10px;
}
.pecu-li-top-img img{
    border: 1px solid #b1bbc3;
    border-radius: 10px;
    transition: 0.5s;
}
.pecu-li-top-img{
    position: relative;
}
.pecu-li-top-img span{
    position: absolute;
    width: 100%;
    padding: 1px 0;
    background-color: rgba(0, 0, 0, 0.5);
    color: #fff;
    top:97px;
    left: 0;
    text-align: center;
    font-size: 12px;
    border-radius: 0 0 5px 5px;
}
.pecu-li-top-img::after{
    content: '';
    position: absolute;
    width: 122px;
    height: 122px;
    background-color: rgba(0, 0, 0, 0.2);
    top: 0;
    left: 0;
    transition: 0.2s;
    opacity: 0;
    visibility: hidden;
    border-radius: 10px;
}
.pecu-li-top-font{
    flex: 1;
}
.pltf-title{
    display: flex;
    justify-content: space-between;
}
.pltf-title h4{
    font-size: 20px;
}
.pltf-title span{
    color: #ee3838;
    font-size: 18px;
}
.pltf-type{
    margin-top: 20px;
}
.pltf-type-ul{
    display: flex;
    gap: 20px;
}
.pltf-type-ul-li span{
      color: #b1bbc3;
      font-size: 14px;
}
.pltf-type-ul-li p{
    font-size: 20px;
}
.pecu-li-bottom{
    padding-top: 20px;
    border-top: 1px solid rgb(238, 243, 245);
    display: flex;
    justify-content: space-between;
}
.pecu-li-bottom-time{
    font-size: 12px;
    color: #b1bbc3;
}
.pecu-li-bottom-bth span{
    font-size: 12px;
    padding: 3px 10px;
    background-color: #2ea1f9;
    color: #fff;
    border-radius:10px;
}
.jump{
    padding-top: 50px;
    width: max-content;
    margin: 0 auto;
}
.jump a{
    display: inline-block;
    padding: 5px 0px;
    width: 40px;
    text-align: center;
    background-color: #fff;
    border: 1px solid #e9eef3;
}
.jump a:nth-of-type(1){
    color: #fff;
    background-color: #2ea1f9;
}
/* .jump a:nth-of-type(5){
    font-size: 14px;
} */
.jump i:nth-of-type(1){
    color: #b1bbc3;
    cursor: no-drop;
}
.jump i:nth-of-type(2){
    color: #b1bbc3;
    cursor: pointer;
}
.adv{
    width: 100%;
    padding-bottom: 100px;
}
.adv-heart{
    width: 85%;
    margin: 0 auto;
    min-width:1200px;
    max-width: 1600px;
}
.adv-heart img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.help{
    width: 100%;
    padding-bottom: 100px;
    background-color: #fff;
}
.help-heart{
    position: relative;
    width: 85%;
    margin: 0 auto;
    min-width:1200px;
    max-width: 1600px;
    
}
.help-heart::before{
    content: '';
    width: 460px;
    height: 418px;
    top: 10px;
    left: 0px;
    background-size: 100% 100%;
    position: absolute;
    background-image: url(../蓝铅笔漫步images/118png.png);
    background-repeat: no-repeat;
    background-position: left center;
    
}
.help-heart-ul{
    display: flex;
    justify-content: end;
    align-items: center;
    gap: 50px;
    padding-top:100px;
}
.help-heart-ul-li{
    width: calc((100% - 460px - 50px * 4) / 4);
}
.hhul-img img{
    width: 100%;
}
.help-heart-ul-li h4{
    text-align: center;
    font-size: 20px;
    margin-bottom: 24px;
}
.help-heart-ul-li  p{
    text-align: center;
    color: #87959f;
    font-size: 14px;
}
.help-heart-ul-li p:nth-of-type(1){
    margin-bottom: 5px;
}
.need{
    width: 100%;
    padding: 100px 0px;
    background-color: #fff;
}
.need-heart{
    width: 85%;
    margin: 0 auto;
    min-width:1200px;
    max-width: 1600px;
}
.need-title{
    height: 175px;
    width: 202px;
    background-image: url(../蓝铅笔漫步images/123.png);
    background-position: center;
    background-repeat: no-repeat;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.need-title h3{
    font-weight: bold;
    color: #3a8eff;
    font-size: 22px;
}
.need-title span{
    font-size: 12px;
    color: #87959f;
}
.need-img{
    margin-top: 50px;
}
.need-img-ul{
    display: grid;
    grid-template-rows: repeat(2,1fr);
    grid-template-columns: repeat(6,1fr);
    gap: 20px;
}
.need-img-ul-li{
    filter: grayscale(100%);
    transition: 0.5s;
}
.need-img-ul-li:hover{
    filter: grayscale(0);
}
.principal-all{
    display: flex;
    gap: 50px;
    padding: 15px;
    font-size: 16px;
}
.principal-all h3:nth-of-type(2){
    color: #027cdb;
    font-weight: bold;
    border-bottom: 3px solid #027cdb;
}
.principal-enlistment{
    margin-top: 20px;
}